I refused, knowing it was probably one of the family's most valuable possessions.

我拒绝了，因为我知道那极有可能是这家人最值钱的一样东西了。

Then he offered me his tent. I refused, knowing it was probably one of the family's most valuable possessions.

然后他把他的帐篷给了我。知道这个帐篷可能是他们家最值钱的财产之一，我拒绝了他的好意。

The house has been in the family’s possession since the 1500s.

【possession】这所房子自 16 世纪头 10 年以来一直归这个家族所有。

He is to share equally in their benefits, even though he has received money from the sale of family possessions.

除了他卖祖父产业所得的以外，还要得一份祭物与他们同吃。"